PC crashes mid game with random solid color as well as random lag spikes

Jan 30, 2019
Motherboard: MSI Z97 GAMING 5
CPU: Intel Core i7 4790K @ 4.00 GHz
PSU: Corsair CX750M
RAM: Kingston HyperX FURY 8GB 1866MHz DDR3
SSD: Crucial MX100 256GB
HDD: Seagate 1TB Desktop HDD

This has been occurring for the past couple of months and never found a solution for it. During games like destiny 2 or fortnite i sometimes get lag spikes for no reason when playing online multiplayer. This usually leads me to restart my pc and that fixes it temporarily yet eventually starts to lag again.
And also mid game it freezes for no reason even when there is no lag at all with a solid color of whatever it was previously displaying, like for instance if the screen was predominately blue it would freeze with a solid blue color. When it freezes i can still hear game audio yet the only thing i can do is manually restart it to use my computer. This is almost a daily occurrence as well as the lagging is.
I tried remounting my gpu and my ram but that did not help. I've checked my temps and they all seem good. I've used heaven benchmark to stress test my gpu and nothing went wrong, and temps were fine. I don't believe its my gpu but I have no idea what it could be. I don't have much knowledge when it comes to these types of problem so any help would be really appreciated.

Also I've read that it could be my PSU so here are the voltages recorded from HWMonitor don't know if they are good or bad:
Hardware monitor Nuvoton NCT6792
Voltage 2 3.31 Volts [0xCF] (AVCC)
Voltage 3 3.31 Volts [0xCF] (3VCC)
Voltage 7 0.26 Volts [0x21] (CPU VCORE)
Voltage 8 1.81 Volts [0x71] (VCCIN)
Voltage 9 1.49 Volts [0x5D] (DRAM)
Voltage 10 10.82 Volts [0x7B] (+12V)
Voltage 11 5.04 Volts [0x7E] (+5V)
Temperature 0 33 degC (91 degF) [0x21] (SYSTIN)
Temperature 3 35 degC (95 degF) [0x23] (TMPIN3)
Temperature 5 127 degC (260 degF) [0x7F] (TMPIN5)
Temperature 6 33 degC (91 degF) [0x21] (TMPIN6)
Temperature 8 0 degC (32 degF) [0x80] (TMPIN8)
Fan 0 672 RPM [0x2A0] (SYSFANIN)
Fan 1 1197 RPM [0x4AD] (CPUFANIN)
Fan 2 836 RPM [0x344] (AUXFANIN0)
Fan 3 1203 RPM [0x4B3] (AUXFANIN1)
Fan 4 845 RPM [0x34D] (AUXFANIN2)

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