Yeah, once methoxetamine and then deschloroketamine were out and openly available I've switched to them instead of DXM because of subjectively cleaner effects. These don't share the reverse tolerance of DXM and I quickly built up some tolerance - way faster than I felt with DXM but I didn't care because they were cheap and potent. But after some time I decided to order some DXM again and tried 600mg which should at least have had some effects. It had, but not what I expected. There was a complete lack of dissociation, instead auditory hallucinations (hearing voices). It was scary and I curled up in bed, thankfully sleep arrived soon. I wonder what the fuck happened there, I never had psychotic symptoms from any dissociative before. DCK worked as expected. I had some sleep deprivation during that time which brought up whispers in white noise (running water or fans) but never full on voices.
So yeah, the magic goes lost with DXM and I don't know whether it comes back. I have now been abstinent for 2+ years with one exception where I had a cold and got DXM syrup from the pharmacy (their recommendation, I didn't ask for it but when I had it, of course despite the fear I had to down a higher dosage than recommended. Finished the 300mgs in 2 days and got some slight dissociation. No voices.) So maybe the magic is back. I am tempted to buy more syrup and test it but I also know this would bring my old disso addiction back and I am currently living with an (un? fortunately) anti drug girlfriend and I can't just use with her around. Maybe for the better.