While I didn't dose as high as you Shpongledd, I used acid for a period at a minimum of weekly basis and noticed severe tolerance issues or if not tolerance issues some sort of immunity to the trip. It felt far more recreational each time, much less visual and more like being stoned than anything, doubling my dose was required and it still didn't bring good effects.
I took a two week break and found no change. I then took a good proper break of at least a month, took what I was taking before and was on my ass ended up taking it outside that day running about the place having no clue for a good 6 hours. So while it may not be tolerance, don't abuse acid, it might not abuse you but to be honest it'll just get boring, it did for me and luckily I noticed it when it was only beginning to happen and stopped it. Now acid fucks my head up everytime since I've realized there are other psychedelics out there that I enjoy using so it isn't the chemical I'm eating at least every weekend. (Post is for general topic of the thread not at you Shpongledd just thought your experience was similar).
As for those yellow border avatars, they are the second batch and that sounds about right for dose. No idea on the crystal, if you're one of those people who really believes in purity being a big issue you'll be disappointed to here that you'll most likely find the Dali Lama's better. Still great tabs though, I preferred the first batch though as they were even stronger. I've had some real nice clean trips on them though.
those dali's are so fucking good... I'll try and get those again instead
