In the Limited Edition Guide, there is a guide to anti form here is the cause.
As soon as you drive 0-4 times (IN ANY TIME LIMIT) 0 % chance of Anti Form on Next Drive
As soon as you drive 5-9 times (IN ANY TIME LIMIT) 10 % chance of Anti Form in Next drive
As soon as you drive 10 or more times (IN ANY TIME LIMIT) 25 % chance of Anti form In Next drive
Once you hit Anti-form the cycle will reset to 0 drives
Credits to OathkeeperSora
As soon as you drive 0-4 times (IN ANY TIME LIMIT) 0 % chance of Anti Form on Next Drive
As soon as you drive 5-9 times (IN ANY TIME LIMIT) 10 % chance of Anti Form in Next drive
As soon as you drive 10 or more times (IN ANY TIME LIMIT) 25 % chance of Anti form In Next drive
Once you hit Anti-form the cycle will reset to 0 drives
Credits to OathkeeperSora