PerformanceLua V5(Aimware)

local ref = gui.Reference("Visuals", "Other", "Effects")
local noshadows_checkbox = gui.Checkbox(ref, "noshadows", "No Shadows", false)

local function noshadows()
    if noshadows_checkbox:GetValue() then
        client.SetConVar("r_shadows", 0, true);
        client.SetConVar("cl_csm_static_prop_shadows", 0, true );
        client.SetConVar("cl_csm_shadows", 0, true );
        client.SetConVar("cl_csm_world_shadows", 0, true );
        client.SetConVar("cl_foot_contact_shadows", 0, true );
        client.SetConVar("cl_csm_viewmodel_shadows", 0, true );
        client.SetConVar("cl_csm_rope_shadows", 0, true );
        client.SetConVar("cl_csm_sprite_shadows", 0, true );
            else
            client.SetConVar("r_shadows", 1, true);
            client.SetConVar("cl_csm_static_prop_shadows", 1, true );
            client.SetConVar("cl_csm_shadows", 1, true );
            client.SetConVar("cl_csm_world_shadows", 1, true );
            client.SetConVar("cl_foot_contact_shadows", 1, true );
            client.SetConVar("cl_csm_viewmodel_shadows", 1, true );
            client.SetConVar("cl_csm_rope_shadows", 1, true );
            client.SetConVar("cl_csm_sprite_shadows", 1, true );
    end
end

noshadows()

local function event(e)
if e:GetName() == "round_start" then
    noshadows()
    end
end

client.AllowListener("round_start")
callbacks.Register ("FireGameEvent", event)