r41113 to r41664 - nvram erase?

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Drjjr
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Joined: 04 Aug 2019
Posts: 7

PostPosted: Sat Dec 07, 2019 16:49    Post subject: r41113 to r41664 - nvram erase? Reply with quote
r7800 as main router
no QoS
AT&T gigabit up/down internet connection

So I've been running r41113 on my r7800 for a while now with no issues. Got a wild hair and decided to upgrade to r41659 and later r41664 today. I noticed that my 5Ghz and 2.4Ghz wifi performance dropped dramatically (iperf3 numbers and general speedtest about half of what they were). dslreports speed test via a wired connection was good but bufferbloat was huge. (went from A/A/A to B/C/A on the dslreports grades).

I flashed back to r41113 and the performance numbers are back to "normal" (369Mbps on iperf for the 5GHz channel instead of 167Mbps, dslreports happy with no bufferbloat)

My question to the group is: is this because I've never reset nvram? Or is there something else?
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KILLERDOG
DD-WRT User


Joined: 05 Oct 2010
Posts: 65

PostPosted: Sat Dec 07, 2019 17:23    Post subject: Reply with quote
Ok, im a novice but ive always been told to chear nvram if you use a different build and dont use the same config file for different builds. Im running the latest on my r7800 and im happy so far. My wifi seems fast and doesnt drop connection.
egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 6938
Location: Netherlands

PostPosted: Sat Dec 07, 2019 18:04    Post subject: Reply with quote
If you have problems (like you are now seem to have) you should do from the CLI:
Code:
nvram erase && reboot


Put settings in manually do not restore from a backup.

Wifi settings (especially channel selection) have changed
make use of the advices from @MSOEngineer for the best throughput see the R7800 install guide, last page under Useful information (see my signature)

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Routers:Netgear R7800, R6400v1, R6400v2, Linksys EA8500, EA6900 (XvortexCFE), E2000 (converted WRT320N), WRT54GS v1.
OpenVPN Policy Based Routing: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=321686
Install guide R6400v2:http://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
OpenVPN Server Setup:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=318795
Install guide R7800: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Wireguard Server setup guide:https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1183135
Wireguard Client setup guide:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324624
Wireguard Advanced setup guide:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324787
Forum Guide Lines (important read):https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087
Drjjr
DD-WRT Novice


Joined: 04 Aug 2019
Posts: 7

PostPosted: Sat Dec 07, 2019 19:21    Post subject: Reply with quote
Thanks. I'll re-flash, reset and manually re-enter my settings and see what happens.
Drjjr
DD-WRT Novice


Joined: 04 Aug 2019
Posts: 7

PostPosted: Sun Dec 08, 2019 21:29    Post subject: Reply with quote
That definitely resolved the wireless issues...still getting big bufferbloat numbers on the wired connection that I didn't have before.
msoengineer
DD-WRT Guru


Joined: 21 Jan 2017
Posts: 1620
Location: Illinois Moderator

PostPosted: Mon Dec 09, 2019 0:08    Post subject: Reply with quote
Firstly, see if the shortcut forward engine, sfe, is turned on under the main setup tab. If it is that's fine. Proceed to www.dslreports.com/speedtest and run a test to find out what your actual speeds are. Then, go back and turn off sfe, and start to tweak your qos settings accordingly. Note that 100mbs is 100000kbps. I would start with HFSC and PIE or fq_codel.
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FORUM RULES

TIPS/TRICKS: Best QCA Wifi Settings | Latency tricks | QoS Port priority | NEVER USE MU-MIMO |
Why to NOT use MU-MIMO | Max Wifi Pwr by Country | Linux Wifi Pwr | AC MCS & AX MCS | QCA 5Ghz chnls to use | WIFI Freq WIKI | TFTP R7800 | Don't buy AX | IPERF3 How-To

[R9000]45478 nightly (Main Router)
[EA8500]43192 & 45417 (2xOffsite)
[R7800]napping
[WDR3600]BS 44715 (Offsite)
[A7v5]BS 43038 (Offsite+spare napping)
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