That sounds similar to a tablet/stylus with a too low reporting rate, an issue @AhabGreybeard described well in the past. Does your stroke look like the pictures in the linked postings below?
Since the accuracy of mice also depends on reporting rates, and especially the cheaper ones can have far lower reporting rates like good gaming mice often have, this may be the issue. If you are lucky, your mouse driver offers a setting to set higher reporting rates.
But let’s see what you will answer.
Hello @Killbot and welcome to the forum!