When i enter The Medical Clinic ,some kind of bug /glich happpens and i cant move .Every NPC is stuck in each other and the FPS is really low .Cant see even my character .Anyone had this problem ?

Do you play with mods? If so, I'd suggest posting your load order (within a spoiler).

Mhm here it is
[X] FalloutNV.esm
[X] DeadMoney.esm
[X] HonestHearts.esm
[X] OldWorldBlues.esm
[X] LonesomeRoad.esm
[X] GunRunnersArsenal.esm
[X] Fallout3.esm
[X] Anchorage.esm
[X] ThePitt.esm
[X] BrokenSteel.esm
[X] PointLookout.esm
[X] Zeta.esm
[X] TaleOfTwoWastelands.esm
[X] ClassicPack.esm
[X] MercenaryPack.esm
[X] TribalPack.esm
[X] CaravanPack.esm
[X] YUP - Base Game + All DLC.esm
[X] OWNB - Open World.esm
[X] domecity.esm
[X] JIP Selective-Fire.esm
[X] MoMod.esm
[X] More Perks.esm
[X] NVEC BugFixes.esm
[X] Lings.esm
[X] MikotoBeauty.esm
[X] Shojo Race Vegas.esm
[X] AEVegas.esm
[X] TTWInteriors_Core.esm
[X] TTWInteriorsProject_Combo.esm
[X] OONV.esm
[X] Alton, IL.esm
[X] TTWFixes.esm
[X] TTW-NVEC BugFixes 2.esm
[X] The Mod Configuration Menu.esp
[X] The Weapon Mod Menu.esp
[X] A Better Cass.esp
[X] A Better Veronica.esp
[X] OWNB - Red Canyon Overhaul.esp
[X] AEVegas_101_items.esp
[X] RCSS.esp
[X] 5mmSubmachineGun.esp
[X] BabyGoat Brut Submachine Gun Weapon Mod.esp
[X] Pipboy 5k.esp
[X] MoonShadowRace.esp
[X] FWIA.esp
[X] CASM with MCM.esp
[X] XFO.esp
[X] Better Combat Performance - Merged.esp
[X] OONV - Override.esp
[X] AltonAddon.esp
[X] Dynamic Third Person Camera.esp
[X] UnscopedWeaponZoom_ArmorWeight.esp
[X] This_Machine_m14_with_Scope.esp

Hm, I'm not familiar with several of those because I don't use TTW. However, my best guess is that the problem lies somewhere with TTW Interiors or the bug fix plugins.

It may be tedious but you might have to try turning them off one at a time and going in game to see which one is causing the problem.

Oke ill try something.

i think its the shojo race i used TTW alot in the past and although i never used the shojo race i have seen alot of people on the TTW forums saying that was the issue to similar bugs they we're having

Oh ,didnt test it out jet ,but ...didnt have a problem before .I mostly use armors form the mod and the scarf .Anyway thx 4 the info.