Absolutely, I used MXE often (like 2-3 times a week), which caused word recall issues sometimes, but then I used 3-MeO-PCP most days for like a year and a half, with one break. Most of the reason I stopped, well, part of it, besides it turning weird and sketchy, was because I felt out of control of myself due to inability to recall things effectively. It freaked me out and now I hardly ever use dissociatives. I think as more people abuse more of them, we are discovering they're certainly not benign. I strongly recommend against daily disso use. I think as occasional experiences they can be amazing and worthwhile, but they're really bad for daily use.
For real, I've seen people go seriously off the deep end from dissos, and I keep seeing it, too. Please think twice before abusing dissociatives. It is my belief that although insight is certainly possible, with abuse, it turns into heavy delusions and the user doesn't seem to have any idea they're nutty as a bag full of trail mix.