Please Stop Overtuning Events
Shield Generator bug aside, the Jar Jar event is a joyless slog to do at R5. Tier 4 in particular has almost no strategy involved but requires you to slowly tickle Darth Maul to death over 10 minutes or so, which sucks all the fun out of the idea of "Duel of the Fates but Jar Jar". At first I thought it was a bug because his health didn't move at all for several attacks. It took me even longer to beat the final tier. Again, I was almost sure I was doing it wrong because the first DDK just would not die.
This is with all zetas and best available mods, which are the in-game recommendations for the event.
Compare to Jedi Knight Cal Kestis, which I did two weeks ago at G12 with no Zetas. As long as you use the event specials to cleanse purge when the stacks build up and use counterattack when appropriate, it's a fun speed run of the major events of Fallen Order with some light puzzle elements. I much prefer that sort of Journey Guide after putting in the effort to farm and gear my characters than Bombad General or Dark Times, which have those puzzle elements but drown them out with enemies tuned to R7 or higher characters.