Running a TF2 server on a VPS

[ShowTeKPT]

Hello,

I'm running a TF2 server on VPS with the following specs.

Ram: 8GB
HDD: 100GB
Bandwidth: 100Mbps
Cpu: 4 vCores (Model: AMD Opteron™ Processor 4284)
3 Ghz
Centos 6.3 32bits

I also have a ts3 server running with no problems.

I use TCAdmin to start and manage the tf2 server.

I have some lag problems on the tf2 server, they use to be 5-10s and then stops for a time.

Plugins:
01 "[TF2Items] Manager" (1.4.1) by Damizean & Asherkin
02 "Basic Comm Control" (1.6.0-dev+4454) by AlliedModders LLC
03 "[TF2Items] Give Weapon" (3.14159) by FlaminSarge (orig by asherkin)
04 "Freak Fortress 2" (1.06h) by Rainbolt Dash, FlaminSarge
05 "Basic Commands" (1.6.0-dev+4454) by AlliedModders LLC
06 "Reserved Slots" (1.6.0-dev+4454) by AlliedModders LLC
07 "TF2 Class Restrictions" (0.6) by Tsunami
08 "High Ping Kicker - Lite Edition" (1.0.0.1) by Liam
09 "Fun Commands" (1.6.0-dev+4454) by AlliedModders LLC
10 "Kill Block" (1.0) by ShowTeK
11 "Grooveshark" (1.2.5) by [GNC] Matt, Evinly Scratch, (-TN) DontWannaName
12 "Client Preferences" (1.6.0-dev+4454) by AlliedModders LLC
13 "Tidy Chat" (0.4) by linux_lover
14 "Taunt Crits" (2.1) by HeMe3iC
15 "Sound Commands" (1.5.2) by AlliedModders LLC
16 "Dissolve" (1.0.0.1) by L. Duke
17 "Fake and Force Unlimited" (2.0) by MasterOfTheXP
18 "Fun Votes" (1.6.0-dev+4454) by AlliedModders LLC
19 "Models Precache" (1.1) by ShowTeK
20 "HLstatsX CE Ingame Plugin" (1.6.19) by psychonic
21 "SteamRep Checker" (1.1.5) by jameless
22 "Nextmap" (1.6.0-dev+4454) by AlliedModders LLC
23 "Basic Votes" (1.6.0-dev+4454) by AlliedModders LLC
24 "[TF2] Thirdperson" (2.1.0) by DarthNinja
25 "Admin File Reader" (1.6.0-dev+4454) by AlliedModders LLC
26 "Spray Tracer" (5.8a) by Nican132, CptMoore, Lebson506th
27 "Basic Info Triggers" (1.6.0-dev+4454) by AlliedModders LLC
28 "Anti-Flood" (1.6.0-dev+4454) by AlliedModders LLC
29 "Sound Menu" (1.0) by ShowTeK
30 "Trade Chat" (1.5.1) by Luki
31 "SourceBans" (1.4.11) by SourceBans Development Team
32 "haleregras.smx"
33 "Player Commands" (1.6.0-dev+4454) by AlliedModders LLC
34 "Admin Menu" (1.6.0-dev+4454) by AlliedModders LLC
35 "VIP Menu" (1.0) by ShowTeK
36 "Admin Help" (1.6.0-dev+4454) by AlliedModders LLC
37 "Pinion Adverts" (1.12.28) by Multiple contributors
38 "[TF2] backpack.tf Price Check" (2.7.2) by Dr. McKay
39 "Basic Chat" (1.6.0-dev+4454) by AlliedModders LLC
40 "Freak Fortress 2: Saxtoner Ability Pack (1.2)" by Otokiru
41 "Freak Fortress 2: rage_overlay" by Jery0987, RainBolt Dash
42 "Freak Fortress 2: Replace Projectile" (1.0.2) by frog, friagram
43 "Freak Fortress 2: Projectile Particles (1.2)" by Otokiru
44 "Freak Fortress 2: special_noanims" by RainBolt Dash
45 "Freak Fortress 2: Powerlord Abilities" (1.0) by Powerlord
46 "Freak Fortress 2: Abilities of 1st set" by RainBolt Dash
47 "Freak Fortress 2: Default Abilities" by RainBolt Dash
48 "Freak Fortress 2: WC3 Ability Pack (1.1)" by Otokiru

I get DataTable warnings on console,
Late precache of models
VPhysics errors on some maps
Bad sequence

It also have some lags when I kick some people.

Any help?