So I am playing Ultima Underworld. Right now the game functions well enough (even though its so dated I mean jumping and pathfinding in this game feels flimsy and square)

Now the biggest technical issue I noticed is the movement changes after certain periods of time. Let me explain:

The movement keys the WASDX to Walk,Turn, and Run system, the movement seems fine, normal, but after a certain while the movement starts to become "unfluid" like the character suddenly moves like as if I am playing an old dungeon crawler game like Wizardry, Might and Maigc, and the Dungeons in Ultima 1-5. And it makes things like Platforming and walking very difficult like walking is more faster then usually when this issue occurs.

To anyone who understands what I am talking about, is there any advice on how to prevent the issue from occuring again, because all I can do is shut down and turn on the game.

Bump?

Do you mean the gameplay and graphics get jerky after awhile?

Are you playing on a laptop? Is ventilation ok, ie. could it be your PC is heating up too much, and you are experiencing CPU throttling?

You haven't seen the same problem with any other games or applications?

I would say graphically. I mean like I said the character movement feels like he's taking steps by steps. Like his movements becomes very square tile based and not like he's walking in a fully 3D enviornment.

And this is something that on my old laptop and my current High End Desktop and my bro's computer.

A lot of older games were hacked together with some real ingenuity. Some of them behave poorly when processing power gets too high. Have you tried setting affinity to single core and possibly creating a power profile to waste CPU time? The older the game, the more worthwhile it is to check stuff like that if you aren't in an emulated environment.

No, it is not.

Google "set power profile in Windows" and you will find a tutorial. Your laziness does not incentivize me to provide more detail than that.

Well Google's results are pathetic only 4 and none of them specific to what I am looking for.

Simply changing your power settings to 'power savings' will reduce your CPU power by 50%. I run almost exclusively in power saving anymore unless i need the extra boost.

Although it's very likely it's using DosBox, so you could tweak how many cycles the game uses to increase it's performance, depending on if you need more, or less. The .conf is fairly easy to find in the directory structure if you look for it.

Funny, I got 84 million. Are you so unwilling to spend two minutes to learn a thing, Elmo? You've posted too much for me to think you're stupid.

EDIT: I should add that since you say that you have this problem after you play for a while, you're describing the textbook symptoms of a memory leak. If you are in fact playing in DOSBox, there has been an on-and-off problem where extended play sessions where searches are made for missing files causes a cumulative memory leak. Next time it happens, pull up your task manager and see if DOSBox (or whatever program you're using for emulation) is hogging a bunch of resources. If so, then the only real fix - short of rewriting DOSBox - is to close out the program and restart it. You shouldn't have to reboot the computer.

Nothing to do with temperature, it's ancient game running under dosbox FFS!

Try turning your caps-lock off again, and take care not to press it by accident, with WSAD controls it's easy :)

Headbutt a semi.

That's a feature Looking Glass referred to as "Easy Move", presumably because proper 4+ degrees of freedom was unfamilar to people in a pre-Wolfenstein3D world or something :p According to the quick reference cards, easy move happens when you use the QWEASDZC movement keys while holding down the shift key. I'm not sure if caps lock is equivalent to holding shift, but I suspect that it is. In this case,
huan has the right answer - you accidentally pressed caps lock and simply need to press it again to disable it.

The problem was I pressed caps lock by accident thus activating a "easy move" system that makes it move like a Tile Based dungeon crawler game.

And you wanted me to make changes with my power saver :P
Confirmed that is the exact problem.