P: Taking too long to start

Hi Rieque, that is exactly what a remote access session showed up on my system - it was my 400MB of brushes.  I have added to the thread.  I'm off to rebuild my presets too. xxx

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

Thanks for the help everyone.
I've uninstalled using the Creative Cloud Cleaner Tool, as suggested here: https://forums.adobe.com/message/10712236#10712236 , and started getting load times of 40s to 1min without adding my presets (most of the time still on the Adding Extension....Halide Bottlenecks). So to test I've added my presets one by one and it looks like one of the causes was my brushes file, that has 370mb but took my load time up to 6min.

I will now rebuild my presets from scratch and see how they affect the load times, I even got a record load time of 20secs in ony of my tests without the presets, so they are certainly the reason

Thanks so much Jeff.  I am watching Adobe Max catchups and loving what is coming in CC 

I've asked an agent to connect with you directly to troubleshoot.

I just wanted to update the conversation on my thread as I see a few other people are having the same issue.   I updated to Mohave upon its release.  Current status is a PS load time of 1m 24s, of which 35 seconds on Adding Extension Halide Bottle necks, and 20 seconds on Reading Pane.  Once the Splash Screen has disappeared, there are two or three more spinning balloons sessions of approx 10-20 seconds each, which I assume is something loading in the background.  So I can get to work approx 2 minutes after I have clicked to open PS. 

I've read this thread and tried almost everything that was suggested in it but nothing changed

I have already tried removing all my presets and still no luck, besides that, I don't have any preset file that's too large, biggest ones are brushes with 370mb and styles 200mb, which I don't think is abnormally large, or is it?

Negative. It was full of comments not relevant to the current version and present understanding of the issue.

Shouldn't Rieque Lopes theard be merged to emma bryan that is 2 pages long & few months older?