CD access slowdown

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Cheez
Posts: 8
Joined: Tue 19 Dec, 2017 4:08 am

CD access slowdown

Post by Cheez » Sat 23 Dec, 2017 1:23 am

I don't know when or where this happened, since I didn't really do much or change much in PCem and as far as I know this wasn't always the case, but every time PCem reads from the CD drive, whether it's a real disc, an image, or otherwise, emulation speed drops below 10% as long as it continues to be "in use". Any idea what to do about this?

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omarsis81
Posts: 636
Joined: Thu 17 Dec, 2015 6:20 pm

Re: CD access slowdown

Post by omarsis81 » Sat 23 Dec, 2017 2:33 am

Wow, below 10%? It never happened to me!
Did you test many CDs? Images? Any game in particular?
Did you try with many computers?

Cheez
Posts: 8
Joined: Tue 19 Dec, 2017 4:08 am

Re: CD access slowdown

Post by Cheez » Tue 26 Dec, 2017 2:50 am

I've never tried it off of this computer, but there's definitely something wrong because PCem never started out like this. I could try my config on a different computer and see how that works, but I can't do it at this moment. as I already said, it happens with everything. Real drives, images, it doesn't matter. If PCem has to read the disc, it slows everything down to the point that even copying a few MB will take minutes and any games that store voice or other things on CD will stutter and repeat constantly until it's no longer reading the disc.

Cheez
Posts: 8
Joined: Tue 19 Dec, 2017 4:08 am

Re: CD access slowdown

Post by Cheez » Sat 30 Dec, 2017 9:52 am

Alright, so: As it turns out, whatever is happening with my current installation of PCem, doesn't happen if I make a new folder with a fresh copy of PCem, copying over my rom folder and HD image and reconfiguring the machine from scratch. I really don't understand what's going on here.

edit: Aside from that, I can't really find out what's wrong. There's missing lines in the new config that are present in the old config but it doesn't look like any of them should affect this.

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TheOligopolist
Posts: 6
Joined: Thu 16 Jun, 2016 8:46 pm

Re: CD access slowdown

Post by TheOligopolist » Fri 05 Jan, 2018 11:13 pm

Accessing from the physical disc drive has never worked well on my machine. I don't think the emulation will drop down to 10% speed like it does on your machine but it certainly causes a considerable performance hit.
So I just create an image of the CD I want to use and mount with Daemon tools and that works very well.

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