I personally would never game via an external drive (unless I was on PC and the drive was connected using a special port for that purpose (called ‘esata’).
The ‘e’ in esata stands for ’ external’, and makes it the same speed as all the other sata buses used for moving drive data towarda the cpu and memory.
In a PC enthusiasts are moving beyond sata for faster drive access - a juge part of why this games proves flawless for me; I use a next gen interface; M2; which carries my primary drive data right into the cpu/memory buses quite unrestrained from bandwidth limitations of even the SATA bus…
Now- USB external drives have a few benefits and a few woes
Great for storage (eg media), and backups… great for simple games not requiring complex game world loading ‘on the fly’.
Can be cheap, very easy to add to a system.
Biggest weakness are their cost. They are generally the cheapest drives, made with portability (not speed/performace as their focus).
Even if they use a USB3 controller/interface chip- the drives themselves may never actually push data that quick.
Most small portable drives will have the slowest platter rotation speeds and have horrible seek times (the time it takes to move the mechanical drive head to where the data is…)
Some, due to platter density, might claim nice read speeds- but only for a nice long continuous file.
USB interface is going to be a hiccup for gaming, for some games even if it were possible KCD would HATE it.
The benefit here would be installing (and updating) on a freshly formatted drive might reveal how the other drive being fragmented caused issues.
The steps above that rebuilds a playstatio drive from scratch (via a PC that also checks for drive errors), is a very full on way to format a drive (not needed unless you want to do the error check).
The clean drive, free from fragmentation, is what we are after. This will help massively, and is no doubt the majoritys’ present woe with consoles version of the game.
(PC users complaining of similar issues as well)
We dont have to remove the playstation drive to do this. Drive errors generally happen from incorrect power on/off (eg hard power off at the wall rather than using playstations power buttons), and drives being moved whilst in use (not likely moving your playstation around when it is on?), or a combination of those first two: hard power off (drive doesnt have a chance to park the read heads), and then moving playstation (read heads touch drive platter; data is destroyed).
Sure drives die over time/can have manufacturing errors/etc… lion share of reasons for why drives die are not likley to be issues for typical playstation users…
I would skip the error checking drive step via the PC.
If you can do the rest of the steps though (backup), nuke drive, clean setup again, reinstall and restore…
That should do it.
Otherwise; my initial suggestions of delete a few old games installed when you first got the system… (they will be using a nice neat chucnk of drive space at the start of the disc), then with 70-80gbs of ‘clean’ continuous drivespace go ahead and install a clean KCD; and then even applying the patches; the data will all be together… and should allow much faster drive access.
Tl:DR external drives are generally slow, so ‘No’, KCD shouldnt be installed there.
Maybe a large 7200rpm drive that uses external power. . But otherwise No. Just No.