Omnikey 3121 with Zgemma Star 2S

Hello everyone, i switched to a Omnikey 3121 to work with my Zgemma Star 2S because the card gets very hot in the internal reader. I followed a guide on the forum and i succeeded but Oscam stop reading the card every 1 hour or 2 and i have to restart Oscam to get it working again. I've done a lot of research and try changing Oscam version but still getting same problem. Does anyone know how to solve this please? I have OpenATV 5.1 as image. Thanks.

Here's my config:
[global]
logfile = /dev/tty
clienttimeout = 20000
clientmaxidle = 300
netprio = 1
nice = -1
maxlogsize = 500
waitforcards = 0
preferlocalcards = 1
dropdups = 1

[cache]
max_time = 23

[newcamd]
port = 10001@100:000000
key = 0102030405060708091011121314
keepalive = 1
mgclient = 1

[cccam]
port = 5000
serverip = xxx.xxx.xxx.xxx
nodeid = 9A8ECEAB10CB15B0
version = 2.0.11
reshare = 1

[dvbapi]
enabled = 1
au = 1
pmt_mode = 0
request_mode = 1
user = xxxx
read_sdt = 1
write_sdt_prov = 1
boxtype = dreambox

[webif]
httpport = 16001
serverip = xxx.xxx.xxx.xxx
httpuser = xxxx
httppwd = xxxx
httpshowmeminfo = 1
httpshowuserinfo = 1
httpshowcacheexinfo = 1
httpshowecminfo = 1
httpshowloadinfo = 1
httpallowed = 127.0.0.1,192.1.0.0-192.168.255.255

[reader]
label = Reader-2
protocol = pcsc
device = 0
caid = 0100
fix07 = 0
detect = cd
mhz = 357
cardmhz = 357
ident = 0100:00009F,0001EB
group = 1
blockemm-unknown = 1
blockemm-g = 1

Oscam freezes every 1 or 2 hour and i got "timeout(5002 ms)" "timeout(4002 ms) "timeout (20003 ms)". Can i get some help please? Thanks

Thanks for replying, i already tried what you said but it still the same. It works fine with the internal reader though, getting this problem only with Omnikey 3121