Yes, this is not an issue. The SQUID uses the clock pulses received to calculate the tempo, however, the clock pulses always have a little bit of jitter (fluctuation) between each other.
These fluctuations make the tempo display fluctuate, but it doesn't mean that the devices are getting out of sync.
And this cannot be heard by a human hear.

Three main factors can cause this and there are three possible countermeasures.

1.There are two CV standards: V/OCT and Hz/V.
Hz/V: CV output represents an octave of pitch by doubling voltage
V/OCT: 1V represents one octave
Due to the differences in the range or changes in pitches for CV voltages, you can't play at the right pitch if the CV setting of the connected instruments are different.
Please check the settings in the GLOBAL menu CV Settings category to match the specifications of the CV-connected devices.
2. In the V/OCT method, you can set the Reference Note when the CV voltage is 0 V.
Edit [CV 1 Ref. Note] or [CV2 Ref. Note] settings of CV Settings category in the GLOBAL menu according to the specifications of the CV-connected devices.
Reference Note is set in semitones.
To fine-tune the pitch in cent, use the Fine Tune on the CV-connected equipment.
You cannot change Reference Note in the Hz/V method. You'll need to change fine-tune the pitch on the CV-connected equipment.
3. Because CV inputs and outputs analog signals, it is easily influenced by noise due to power supply or cables, etc. and the pitch may go slightly out of tune. However, this is not a failure but a phenomenon peculiar to analog signals.
Some analog synthesizers may take some time to stabilize the pitch, so please make sure that the pitch is stable enough to start performance when you use the unit connected with an analog synthesizer.

Two main factors can cause this and there are two possible countermeasures.
1. If the scales of the melodic control function are set aside from [CHROMA], the pitches set to each pad (step) are automatically corrected based on the scales set. Please set the scale to [CHROMA].
2. If the performance information using the Transpose mode is recorded in the sequence, the pitch set to each pad (step) is adjusted based on the performance information. Please delete the performance information with the Transpose mode recorded in the sequence.

The effects of the CV SLIDE are available only with CV output.
MIDI Note is produced in semi-tones, so it does not respond to continuous pitch changes like the analog signals.
If you use the CV SLIDE, please connect the CV output from this unit to an analog synthesizer with CV input, and select the track output destination from [CV/GATE1] or [CV/GATE2].

The sound may not stop depending on the settings of the connected device. Please stop the sound by operating the connected device.
For MIDI-connected devices, you can send "All Sound Off" MIDI messages from the SQUID by pressing the stop button twice.

A. When you perform in sync with the SQUID as a master and an external unit as a slave.
The master clock may not be set correctly.
Go to the GLOBAL menu > [Sync Common] setting category > [Sync Source] and select [Internal].

B. When you perform in sync with this unit as a slave and an external unit as a master.
It is possible that the SQUID is not correctly receiving the master clock and start/stop signals from external devices.
Please check the following.
1. Is the master clock receiving terminal set correctly?
Set the [Sync Source] setting in the [Sync Common] setting category in the GLOBAL menu to the master clock receiving terminal.
2. Are the external master device and the SQUID connected correctly?
Please check whether the master clock receiving terminal of the SQUID and the output terminal of the external master device are connected correctly.
If [DIN SYNC] is the master clock, go to the GLOBAL menu > [DIN SYNC] setting category > [OUT2 Mode]and select [IN].
3. Are master clock or start/stop signals coming out of the external master device?
Please check that the setting of the external master device.
For the settings regarding sync of external devices, please refer to the instruction manual for your device.
4. Are you using correct connection cables?
For DIN SYNC terminal, please use the MIDI (DIN) cable with the 1 PIN and 3 PIN.
For CLOCK terminals, Use a stereo mini-jack cable.
5. Have you disabled the receiving settings of the START/STOP and CLOCK signals for MIDI input on the SQUID?
Please set values for the [MIDI IN] setting category in the GLOBAL menu correctly.
6. Aren't you set [Sync Source] to [CLOCK] and [IN Sync Mode] to [GATE] ?
If you set [IN Sync Mode] to [GATE], set [Sync Source] to other than [CLOCK], and input master clock into terminals other than CLOCK terminal.

Three main factors can cause this and there are three possible countermeasures.

1. Is a MIDI cable properly connected?
Connect an audio interface or MIDI interface plugged in to a Windows PC/Mac and the [MIDI] terminal of the SQUID using a MIDI cable properly.

2. Is a USB cable properly connected?
Connect a Windows PC/Mac and the [USB-B] terminal of the SQUID directly using a USB 2.0 compliant cable.

3. Are the MIDI OUT Settings categories of global menus set correctly?
Please set each item correctly.
For details, please see "[MIDI OUT] setting" in "GLOBAL settings" in the Operating Instructions.
You can download the Operating Instructions from the Pioneer DJ support page https://www.pioneerdj.com/en/support/documents/production/toraiz-squid/.

To set MIDI settings between a Windows PC/Mac, an external MIDI device and DAW, see the manual of each.

Two main factors can cause this and there are two possible countermeasures.
1. Is a MIDI or USB cable properly connected?
Connect an external MIDI device and the SQUID properly.

2. You need to set MIDI settings correctly depending on the connected external MIDI device. For the correct setting, check the [MIDI IN] setting and the [MIDI OUT] setting in the GLOBAL menu.
For details, please see the "[MIDI IN] setting" and the "[MIDI OUT] setting" in "GLOBAL settings" in the Operating Instructions.
You can download the Operating Instructions from the Pioneer DJ support page https://www.pioneerdj.com/en/support/documents/production/toraiz-squid/.

Three main factors can cause this and there are three possible countermeasures.

1. Isn't the speed modulation enabled?
Turn the DEPTH knob and make the modulation depth [0].

2. Isn't the automation information of Groove Bend function recorded?
While pressing the [COPY] and [PASTE] buttons, use the [GROOVE BEND] slider to delete the automation information.

3. If the SQUID is slave, the BPM of the unit will be also unstable if the clock sent from the connected external device is unstable.
Make sure that the devices are connected correctly and check the settings regarding sync of the external devices. For the settings regarding sync of external devices, please refer to the instruction manual for your devices.

This unit can control the sequences by receiving MIDI signal start/stop messages from the MIDI IN terminal or USB-B terminal regardless of the [Sync Source] setting value.
To disable the start/stop control of MIDI signals, go to the GLOBAL menu >[MIDI IN] setting category > [Start/Stop] and select [Disable].

When turning on/off the unit, minimize the volume of the analog synthesizer connected to the CV/GATE terminal. Depending on the settings of the unit, the GATE may work and the analog synthesizer may be unmuted.

When using audio signals as a trigger signal, please input the sound with sufficient volume (2V or higher) to have a sharp attack/decay such as pulse signals or click sounds.
Also, if audio signals are not pulse signals such as timing clock signals, we recommend [1step], [1ppqn], [2ppqn], and [4ppqn] for the setting of [CLOCK IN] input terminals.
The Gate Length of each step on this unit depends on the BPM, so if you use the audio signals for low-rate timing clock setting, we recommend that you play the sequence pattern after the BPM display of this unit is stabilized.

Please set the output port of the track on this unit to [CV/GATE 1] or [CV/GATE 2].
Set the [CV] setting and [GATE] setting categories of the GLOBAL menu appropriately according to the specifications of the devices you connect to.
Also, if you are using the CV/GATE conversion function of this unit, please select the MIDI channel that CV/GATE-converts in the [CV/GATE OUT] setting category of the GLOBAL menu to match the MIDI channel of the transmitter.

The output range of CV OUT1 terminals and CV OUT2 output terminals is 3 octaves in Hz/V and
1/2/5/10 octaves in V/OCT.
The Hz/V method has a fixed output range, but the V/OCT method allows you to set the Note of
0V output in CV Reference Note.

Set the [CV] setting categories and the [GATE] setting categories in the GLOBAL menu appropriately according to the specifications of connected device.

For details, please see "[CV] setting" and "[GATE] setting" in "GLOBAL settings" in the Operating Instructions.
You can download the Operating Instructions from the Pioneer DJ support page https://www.pioneerdj.com/en/support/documents/production/toraiz-squid/.

Two main factors can cause this and there are two possible countermeasures.

1. If the [Start/Stop] in the [MIDI IN] setting category of the GLOBAL menu is set to [Disable], the start/stop signals from the external MIDI devices will be disabled. Please set it to [Receive].

2. If you are connecting a mono mini jack cable to the CLOCK IN terminal, start/stop signals from the external device can't be received. please use a stereo mini jack cable.
Also, if you want to trigger sequences of this unit with audio signals, you'll use a mono mini jack cable. In that case, please use the play/stop button of this unit or input the start/stop signals from the external MIDI device.

If you are using the USB bus power, you will have restrictions on functions such as the decrease in brightness of displays and brightness of LED of buttons and pads.