Hello all, my CO2 laser started engrave badly. If I'm decreasing the speed and/or increasing power it engraves better, but still not as I wish or as it was some time before. It seems my laser is passing thin vertical objects when engraving. Alignment is ok. Tube is OK. PSU is new.
What can influence this: software problem, bad optics problem, free straps problem, etc?

The problem is very similar as shown in this video

Please help!

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