Every 30 seconds the game's frame rate will just drop to a point were I can't control the character.  10 seconds later it's normal.  This appears to happen during transitioning from day to night.  Also, I just upgraded a GPU if that helps

 

Make sure you aren't using a crack -check

Update GTA IV to 1.0.7.0 (the latest version of the game, or 1.1.2.0 for EFLC) - check

Make sure that you run the game as an administrator.-check 

Make sure that your GTA IV root folder (and every subdirectory) is not set to "read-only"-check

Ensure that ScriptHook.dll, ScriptHookDotNet.asi and Dsound.dll OR Xlive.dll are in the GTA IV ROOT folder-check

Ensure that there is a folder titled 'LCPDFR' in the ROOT GTA IV folder.-check

Ensure that you are using up to date versions of every LCPDFR dependency and LCPDFR itself.-check

Install these: .Net Framework 4.5, Microsoft Visual C++ Redist 2012-check

 

I also have no other mods installed.

"Out of memory" glitch?

You haven't posted any system specs..

I also had this (still kind of do). I managed to reduce the frequency of the lag spikes by making a commandline.txt, with the text -avaliblevidmem 30, in my gta iv root folder. If it doesn't work try changing the number. Hope this helps my friend. 

You haven't posted any system specs..

Operating System

Windows 8.1 64-bit

CPU

AMD FX-8100

Zambezi 32nm Technology

RAM

8.00GB Dual-Channel DDR3 @ 534MHz (7-7-7-20)

Motherboard

ASRock 960GM-GS3 FX (CPUSocket)

Graphics

G246HL (1920x1080@60Hz)

2047MB NVIDIA GeForce GTX 750 Ti (EVGA)

Storage

931GB TOSHIBA DT01ACA100 (SATA)

Optical Drives

TSSTcorp CDDVDW SH-224DB

 

Edited February 1, 201511 yr by lcpdsergeant

If it doesn't work try changing the number. 

Should I increase the number or decrease it?

Should I increase the number or decrease it?

As I don't have a complete understanding of how commandlines work i will have to refer you to a website https://support.rockstargames.com/hc/en-us/articles/200145206-Issues-with-GTA-IV-showing-video-cards-with-over-2GB-as-under-spec.

 

I also upgraded my GPU and started experiencing this problem, so out of curiosity, what Gpu did you upgrade too?

Sorry about the late reply.

 

I also upgraded my GPU and started experiencing this problem, so out of curiosity, what Gpu did you upgrade too?

Sorry about the late reply.

A NIVIDA GeForce GTX 750 Ti