3 Pi1541 models tested with 3 C64 models but still having unstable data problems

[spawnerbr]

Hi all.
I have 3 Pi1541 models from a long time and all models are always unstable here. From the latest days I'm loading a lot of files and having problems. I had problems with Xmen, Barnsley Badger, Menace, Street Fighter 2, Creatures... and even FB64. All softwares works perfectly but sometimes looks like they load corrupted data. Background graphics corrupted, sometimes freezes when starts to load a multiload block, sometimes it runs crashed like FB64...

I have tested with 2 Commodore 64 breadbin (PAL). One with original ROM and other with JiffyDOS. Tried with a C64C NTSC with original ROM.

About the Pi1541, tested with a homemade version (first before buy a hat) that don't have 7406 and other two Pi151 have. Tried to disable JiffyDOS on Pi1541 too, but same problems. Two models are using Raspberry Pi 3 Model B+ (homemade and with a hat) and the other a hat with Raspberry Pi Zero.

Tried 2 original PSU that has 3A. One from Samsung and other from Motorola. I use this PSU on my other Pi3 to play retrogames. When used with a Pi1541 and Pi3 I connected to HDMI monitor to see if a lighting bolt will appear, but nothing too.

Really don't know what is the problem here. Using firmware 1.23 and used the original firmware-1.20180919.zip from PI1541 site but tried to update the 3 files (boot code, mixup and start) from the Raspberry Github, but same issues. Now using the files from firmware-1.20180919.zip and started the tests with Pi1531 firm 1.24 and downgraded until the 1.21 but same issues. So using 1.23 now.

So I will start trying to understand and solve the problem with the homemade Pi1541 that don't have the 7406, only the I2C Bi-Directional. Will put bellow a pic of my model (with Rasp Pi 3 Model B+) and my options file too.

I'm going crazy to find what is the problem here. Anyone can give me a direction?
Thanks!

options.txt