本人是小白腐竹，这两天开服突然出现玩家登入或者下线会后台报错，造成全服延迟的情况，希望有大佬能给出解决方法
以下是后台报错：
[21:05:53] [Server thread/WARN]: Couldn't look up profile properties for com.mojang.authlib.GameProfile@1ebb120e[id=9de8f13a-59cd-32c6-b0f1-781ac947f4c4,name=dai_zi,properties={},legacy=false]
com.mojang.authlib.exceptions.AuthenticationException: The client has sent too many requests within a certain amount of time
        at com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:65) ~[server-1.7.10.jar:?]
        at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.fillProfileProperties(YggdrasilMinecraftSessionService.java:135) [server-1.7.10.jar:?]
        at noppes.npcs.DataDisplay.loadProfile(DataDisplay.java:140) [DataDisplay.class:?]
        at noppes.npcs.DataDisplay.readToNBT(DataDisplay.java:106) [DataDisplay.class:?]
        at noppes.npcs.entity.EntityNPCInterface.func_70037_a(EntityNPCInterface.java:924) [EntityNPCInterface.class:?]
        at noppes.npcs.entity.EntityCustomNpc.func_70037_a(EntityCustomNpc.java:23) [EntityCustomNpc.class:?]
        at net.minecraft.entity.Entity.func_70020_e(Entity.java:1664) [sa.class:?]
        at net.minecraft.entity.EntityList.func_75615_a(EntityList.java:173) [sg.class:?]
        at net.minecraft.world.chunk.storage.AnvilChunkLoader.loadEntities(AnvilChunkLoader.java:487) [aqk.class:?]
        at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:44) [ChunkIOProvider.class:1.7.10-R0.1-SNAPSHOT]
        at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:15) [ChunkIOProvider.class:1.7.10-R0.1-SNAPSHOT]
        at net.minecraftforge.common.util.AsynchronousExecutor.skipQueue(AsynchronousExecutor.java:344) [AsynchronousExecutor.class:1.7.10-R0.1-SNAPSHOT]
        at net.minecraftforge.common.util.AsynchronousExecutor.getSkipQueue(AsynchronousExecutor.java:302) [AsynchronousExecutor.class:1.7.10-R0.1-SNAPSHOT]
        at net.minecraftforge.common.chunkio.ChunkIOExecutor.syncChunkLoad(ChunkIOExecutor.java:12) [ChunkIOExecutor.class:1.7.10-R0.1-SNAPSHOT]
        at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:197) [ms.class:?]
        at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:170) [ms.class:?]
        at net.minecraft.world.gen.ChunkProviderServer.func_73154_d(ChunkProviderServer.java:315) [ms.class:?]
        at net.minecraft.world.World.func_72964_e(World.java:751) [ahb.class:?]
        at net.minecraft.world.World.func_147439_a(World.java:677) [ahb.class:?]
        at net.minecraft.world.World.func_147460_e(World.java:1080) [ahb.class:?]
        at net.minecraft.world.World.func_147459_d(World.java:1036) [ahb.class:?]
        at net.minecraft.world.World.func_147444_c(World.java:1000) [ahb.class:?]
        at net.minecraft.world.World.markAndNotifyBlock(World.java:856) [ahb.class:?]
        at net.minecraft.world.World.func_147465_d(World.java:834) [ahb.class:?]
        at thaumcraft.common.blocks.BlockMagicalLeaves.func_149674_a(BlockMagicalLeaves.java:292) [BlockMagicalLeaves.class:?]
        at net.minecraft.world.WorldServer.func_147456_g(WorldServer.java:569) [mt.class:?]
        at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:288) [mt.class:?]
        at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:931) [MinecraftServer.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:431) [lt.class:?]
        at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:809) [MinecraftServer.class:?]
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:669) [MinecraftServer.class:?]
        at java.lang.Thread.run(Unknown Source)

无法查找到玩家的信息
服务器是开了正版验证吗

表示和楼主遇到的问题一样，但是只有我一个人的ID会报错

没有开，我把plugins替换成前几天的，然后就出现这种情况

那还是建议换回来吧

可能是NPC模组，问题
删除试试

还是这样

删是不可能删的，服务器很多东西都和npc有关
我换了npcmod的一些材质，但是材质应该不会影响吧

这是正常的，玩家进出的时候会加载大量地图资源导致服务器卡顿，建议搜一下服务器优化教程进行优化，如果还是不行的话那就只有升级服务器配置，毕竟硬件才是王道

建议别加核心，直接换一个更高级的核心比升级核心数来得实在

有时候不进出也会卡，之前还好好的突然一个下午开始就这样了

你是mod服吗，我可不可以看看你的电脑配置