I have found the issue and indeed it seems to have been a drive initiation issue where Kdenlive attempted to access a drive it should not have poked at, but it was surprisingly not among the usual suspects. And funny enough this lead me to fix another persistent issue with Disk Manager!
I went completely nuclear on all drives in my system, removed all links to network drives, ejected a DVD I had in an old burner, removed an old Samsung phone I had attached etc. Then I went even further and begun to remove all image-mounting apps such as Daemon Tools. Around then I also realized that āDisk Managementā also load suspiciously slow, and I had two devices I couldnāt see where they came from. One used Elby Virtual CloneDrive and the other appeared as āBR17 DEVICE V1.00 USB Device.ā which is a device I have no idea what it was. One post I found elsewhere said it might be some weird ghost driver from a speaker.
I do not have that particular speaker but I uninstalled the driver.
I do not know which one fixed it but once Elby Virtual CloneDrive and the āBR17 DEVICE V1.00 USB Device.ā ghost driver was gone, KDenlive now starts up in 3 seconds!
As full transparency I will give you a list of things I also did while trying to fix it that did NOT address the issue below:
- I tested to relink %Video% to a local folder on T: (one of my faster M.2 drives) and it did not fix the issue. As a nuclear test I also disconnected fully all my mapped harddrives, ejected a DVD player and removed an android phone I tend to have connected. None of these fixed the issue.
- 23.08.5 and 22.12.3 also took 6 minutes to load.
- I have been able to run Kdenlive in the past (and used it) without a hitch. Kdenlive runs on my 2ndary also without a hitch. But its been about half a year since I last did so and it is only now I get this issue at boot up.
- As requested I tried Kdenlive after fully uninstalling K-Lite (with a reboot). It did not fix things.
- I wiped the system32\temp folder as well, no change.
- I made sure that all Overlays (Nvidia, Bandicam and Discord) were turned off.
- I disabled my webcam since itās the only other hardware change I could think of this year, and updating to Logitech Gaming Hub (I used their older driver before).
- I forced a full Windows 10 update.
- I disabled Windows Defenderās realtime protection and firewall.
Also; what you wrote above is not entirely true, so for the sake of saving you guys a headache searching for issues;
You wrote āOn M2. T:\ 4tb you have linked from C:\ %Video% %Documents% %Desktop%ā. But this should be; āOn M2. T:\ 4tb you have linked from C:\ %Saved Games% %Documents% %Desktop%ā
You also asked where K: is physically located. It is a ~10 terrabyte SATA drive which is physically installed in my 2ndary computer (which is a full tower, not a laptop). This is mapped on my main as K: and I have changed the location to %Video%, %Pictures% and %Music%.