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Slow data rates on CM based roms Tmo T999??

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TSoprano's Avatar
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Default Slow data rates on CM based roms Tmo T999??

I have the non LTE Tmobile Galaxy S3 (T999) and I'm wondering if anyone else is getting slow mobile data rates only on Cyanogenmod based roms?

I've tried Regular CM 10.2 Stable, Hellfire 2.6 (4.3 CM10.2 based), Hellfire 2.7 (4.4 CM11 based) and my average data speed was around 5-7 mbps. When I went back to stock my mobile data rates jumped to 15-18mbps.. Each time I've flashed a cm rom I've clean flashed back to stock and noticed a huge improvement in my data speeds.. I've tried a bunch of different modems and I've even taken out the extra build.prop data tweaks from the cm roms and set all data settings to the same as stock.. Any opinions?
New! Nexus 7 32gb FHD Tablet KK 4.4.2
ROM Stock Rooted (for a couple days @ least)

ROM .::StockMOD::. Version 5

Tmo SGS 4G (wifey's phone now)
ROM Valhalla Black
Kernel sms-T959V-KJ6-v0.1.1-rc1
Modem T959VUKD1
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