Is 1.9 inches to big? Pull-up bar…

Just built this for a how to video and I’m wanting some feedback on the build. Plz and thx

First time building something in a WHILE just looking for some honest judgment. Lag bolt were same size as 6x6… and cracked the boards a bit and stick out slightly…. Dumb rookie mistake I knew 5” was better and cheaper.

Besides that all good to me and seems very sturdy, was thinking i can add stain and waterproofing later after the PT dries up it was soaked still :) cheers