There was this one huge problem i faced, it was when i replaced caps lock to left click using ahk, now i was tinkering with wacom drivers as i was ready to try OTD (OpenTabletDriver), and there was lots of cleanup work that had to be done before this, i followed the wacom guide and when i have time i'll link that below, i used everything file searcher to find and delete the files mentioned by wacom, however there were some other wacom files that werent mentioned that i ignored and they were .sys files thus it would be harder to deal with anyways so i left them.
OTD ran smoothly with no wacom driver conflict, but i didnt like Otd a thing for a whole other time, so i went back to wacom reinstalled the driver. But that was when bugs begun to happen with ahk, i assigned left click to caps lock before but it worked absolutly fine before, now it was buggy and didnt work most of the time or caused glitches, at first i though it was a problem with ahk itself but no it wasnt, as i deleted it and got it back, maybe the code was broken but no i created a whole new code.
i tried windows inbult mouse keys as a way to find a compromise, but that still didnt work, thats when things got real fishy, microsofts inbuilt fuinctions should work fine, mind you i even cleaned up corrupted files before this. So i realised that some sort of wacom drivers were conflicting with the entire left click function outsoide of wacoms own pen. i deleted wacom via win + r then typing appwiz.cpl, looking for tablet or wacom tablet or something of the sorts, double click and unstalled it. Then left click worked fine after this.
Main lesson is that left over wacom drivers if not cleaned properly can cause ahk problems (if the driver is reinstalled with leftover uncleaned files) remaining and im also guessing left click problems in general, most likly these left over drivers would conflict with left clicks of another peripheral. But i havent checked this myself. For now im using OtD, i tried reinstalling again but issue contuinues now im back to otd, im going to get a larger driver and save an image file, and try to clean old drivers to see if wacom can work ever again properly. But hope this helps, and i hope its easy for you because this was a huge headache for me. ^_^