Up the protein to about 1g/lb. of body weight. Given that you are overweight, you probably don't need 265 grams, but somewhere north of 200 for sure. That should help.

Other than that, do a reset and start progressing by smaller increments. We are all in a hurry to get really strong really fast, but smaller increments and not stalling quickly will produce better results than larger increments and stalling.

You are also tall, and possibly long limbed, so you may really have to pay attention to form and squats & presses will always be tougher than shorter limbed folks (us taller guys have some advantage on the DL).

Speaking of DL, you don't mention it. Are you doing them? How about bench press? While DL isn't as critical to FS progress as it is to BS progress, DL does support squat progress. Bench press and overhead press support each other. So if you are leaving out either DL or bench press, you aren't doing the program and can't expect to progress in the other lifts as if you were. Anything that takes you away from doing the program means you need to assess whether or not you need to modify the other aspects of the program you are doing, including how big your incremental increases should be.