P: Taking too long to start

Figured I would try the new 20.0.3 since a few versions have been released in between but still the same issue occurs with "Halide Bottlenecks" loading at startup or at least that message is showing up when Photoshop halts at startup. It's a bottleneck alright 😉
All the tips and tricks (deleting prefs, legacy compositing, etc...) don't have any effect on this issue.
So again back to 19.1.7 since this new version still doesn't work properly.

I've updated to Photoshop CC 20.0.1 and the first loading was worse than before, even with my now much lighter preset files, and I was still having trouble opening psd files, taking several minutes to open vs a few seconds on CC 2018, so I've turned on "Legacy Compositing" on the preferences and it got even worse with the loading time, with no change opening psd files

Also, it looks like on CC 2019 photoshop is using way more memory than it was supposed to, when it is loading or opening files other apps are almost unusable

I might have spoken too soon Jeffrey. v20 just crashed again after with Lighting Effects. Same steps in v19, no crash.
Also my brush was still in darken mode, 50% opacity and v20 felt laggy while brushing. When changing opacity back to 100% and putting the layer blend mode on Normal the lag was gone.
No such issue though in v19 which is still much more responsive then v20.

As for loading RAW's from Lr. I uninstalled v19 so Lr was forced to load v20 but it felt slower.  
So even though I do want to run the latest update (and I always make sure I do) I will still go back to v19, which seems to be updated as well?

I might even stick with v19 for a few weeks/months.

Thanks for confirming the other issues are fixed. Let me see if I can repro the slower file opening.

Hi Jeffrey,

I had another issue with crashing on Render/Lighting Effects which this version cured, many thanks for that.
The progress cursor issue while brushing was fixed in v19 by allowing Photoshop to control the computer. I don't know what changed in the latest v20 update but I'm sure that it's also fixed properly so thanks again.

The slow behavior in v20 on the other hand is still there I'm afraid. Loading the same 650MB layered PSD document as mentioned above your post, still 7s in v19.1.7 but now 35s in v20.0.1

Reading Photoshop Format comes up in v20 and takes a while to finish which does not even show up in v19.

Update: Loading a RAW file from Lr into Ps (via right click Edit In) takes 7s in v19 vs 13s in v20.

Update: hmm seems Lightroom is confused here because I have added v19 as the additional external editing app but in both Edit In instances it loads up v19.

Please update to Photoshop CC 20.0.1. It should fix the issue where you see a progress cursor after clicking on the canvas.

Indeed, boot time for v19 is 3s while +10s for v20. These are both clean installs btw so no extra presets.
Opening a 650MB layered psd document, 7s in v19 vs 30s in v20. That is with both versions quit before loading documents.
Besides slow boot time and opening files v20 feels more sluggish in just about everything.

My happy dance was short lived - although ps loading time is much improved, I am still suffering the spinning balloon for even the simplest action - approx 5 seconds each click - seems worse since my Mohave upgrade.  I am trying to strip away anything that might be impacting performance.  May start a new thread if I can't improve it alone....

I hope that the return to the speed of the previous version will be quickly found ... code compiled in debug mode?

I had a tremendously successful remote access session with Priyank yesterday who achieved a load time of just 15 seconds (YES!) simply by removing my presets - colour profiles, patterns and brushes (my brushes alone were 400MB which is apparently quite big!)  Current load time is approx 55s to 1m 20, not unbearable and better than the 5 minutes hanging on Halide Bottlenecks that I had been experiencing.  I had updated to PS CC 20.0.0 beforehand which may contribute, and Priyank told me they are working on making the presets more efficient.  I would like to say a HUGE personal thanks to Jeff and the team (and any contributors) for following through to find a fix - it really does make a difference when you sit alone in a studio all day cursing your equipment. Very excited by new apps in in the pipeline.