Time Nick Message 18:10 [MatrxMT] I'm experiencing extreme lag when moving the camera while playing in gaming mode on the Steam Deck, using the Luanti 5.12 flatpak. Strangely, the lag doesn't occur in desktop mode... Anyone else experience this? 18:11 [MatrxMT] Minetest 5.11 flatpak didn't have this issue (just upgraded) 18:22 MTDiscord Please file a bug including logs. I wonder if this might be related to the switch to SDL, in similar vein to #16232. 18:22 ShadowBot https://github.com/luanti-org/luanti/issues/16232 -- SDL_PollEvent took too long 18:27 [MatrxMT] OK can do, let me figure out how to gather logs in gaming mode 19:03 [MatrxMT] https://github.com/luanti-org/luanti/issues/16234 19:09 Krock @twrightsman Please provide the relevant debug.txt lines 19:09 Krock (if there's any) 19:11 [MatrxMT] OK let me try to find that 19:13 [MatrxMT] Nothing interesting in debug.txt, can note that in a comment; is this different from the log I attached initially? That was with --verbose, trace was too large 19:14 Krock oh sorry. I totally overlooked that "luanti.log" link 19:16 Krock perhaps the F5 profiler (diagrams) and finally F6 profiler could show up something relevant 19:18 [MatrxMT] The only thing interesting I notice is that FPS drops to zero while moving camera and "Time non-rendering" spikes 19:19 [MatrxMT] Oh wow, the lag doesn't occur when just moving around and not moving the camera. I will comment that on the issue. 19:20 Krock hmm that's pretty much the same issue that occurs to me every few hours of playing The Witcher, but that's most likely due to badly segmented VRAM, which wouldn't be of a concern for Luanti 19:20 MTDiscord twrightsman: In that case I wonder how feasible it is to profile on the Steam Deck? 19:23 [MatrxMT] Luckily the Steam Deck is a full Linux computer so its only limited by me in theory. Which method of profiling would be useful? 19:24 MTDiscord since you seem to be CPU-bound, just perf: https://github.com/luanti-org/luanti/blob/master/doc/developing/misc.md#profiling-luanti-on-linux-with-perf 19:30 [MatrxMT] OK awesome that seems straightforward; though I won't have the time tonight. The flatpak manifest doesn't seem to build with debug symbols so I'll have to compile 5.12 myself 19:30 [MatrxMT] Thanks for the tips! 19:37 MTDiscord Are you sure that your splines are reticulated properly?